What is the average monthly temperature (°C) for a city over the course of a year if January's temperature is -5°C, February's is 2°C, March's is 8°C, and so on, up to December's at 15°C?
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What is the cross product of vector A = (2, 3, 4) and vector B = (5, -1, 0)?
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What is the quadratic formula, given that a, b, and c are coefficients of a quadratic equation ax^2 + bx + c = 0?